Spraying device for paper machines



A. E. BROUGHTON SPRAYING DEVICE FOR PAPER MACHINES Filed April 14, 1939 0. 5 $1 NHNW 6 0 0 m J fwm M m3 i M May 4, 1943.

Patented May 4, 1943 4 UNITED STATES PATENT I OFFICE I I SPRAYING DEVIC: :APER MACHINES Arthur F. Broughton. Glens Falls, N. Y. Application April 14, 1939 Serial No. 267,772 ,1 Claim. (Cl. 92-40) This invention relates to showers for paper making machines and other machines where showers are required.

It is one of the objects of the present invention to provide a novel and improved shower for paper making machines and the like which is compact, light in weight, inexpensive and emcient and can be installed readily on such machines.

Another object is to provide a novel and improved reciprocating shower which includes no hoses or flexible conduits for supplying the fluid to the shower head.

Another object is to provide a novel and improved reciprocating shower which can be extended across the member to be sprayed and which can be supported solely from one side of the member without support at the other side thereof.

Another object is to provide a reciprocating shower which can be supported at one end of a rotary cylindrical screen having one closed end and will work against of the screen.

out the various views, and in whi h,

Fig. 1 is a vertical longitudinal section takenthrough the left hand portion of a shower embodying the invention and the left hand portion of a rotary cylindrical screen in conjunction with which the shower is used;

Fig. 2 is a similar section through the right hand portion of the screen Fig. 3 is a similar section through the right hand portion of the shower, Figs. 2 and 3 so inter-related as to show the relative positioning of the right hand portions of the shower and screen;

hand end portion of the shower shown in Fig. 3'; Fig. 5 is a view in front elevation looking toward the left hand end of the structure shown in Fig. 1; and p Fig. 6 is a vertical section taken on the line 6-6 of Fig. 1 as indicated by the arrows.

. In accordance with the embodiment of the invention illustrated in Figs. 1,

strainer and is designated lay-the numeral I00 is cylindrical and extends between the elosed end Illa and the head 3b. This screen proper I00 is provided with thereof and the screen acts as a strainer to prevent the passage of lumps, clots, etc. through the screen.

In connection with such a screen, as screen ill illustrated, it is now the common paper mill of water per The shower of the present invention is used producing com-4 downwardly spaced relation from the top thereof. Becuredasbybolts l2 and lltothebow lland cross bar I2 is a mounting bracket II for my shower.

This mounting bracket -II has two horison openings-therethrough. in the upper one which a water supply pipe |i is mounted. ,As shown, this supply pipe li includes a short horizontal section lia mounted in the bracket l i and a longer horizontal section lib closed at its end remote from the bracket II by a plug II. The supply pipe li runs into the screen ll through the open end of the same and extends to a point close to the closed end lie of the screen. As shown by the relative positioning between screen head lie and plug II in the conjoint views Figs. 2 and 3, the supply pipe is located at a level spaced from but quite close to the top of the screen. A water feed pipe l8, connecting with any suitable source 01 water'supply, connects to a strainer I! and this strainer in turn connects with an elbow II at-- tached to the outer end of the supply pipe li.

A spray head 2| is mounted for sliding reciprocating movement on the section lib of the supply pipe li. This spray head consists of a sleevelike pipe carrying a plurality of spaced spray nozales 22 which are directed upwardly toward the top of the screen Ill. The two ends of the spray head 2| are closed by ring-like plugs 23 carry.- ing packing 24 so that while reciprocation of the spray head 2| is permitted relative to the supply pipe l8, water tight connections are made between the ends of the spray head and the section lib of the supply pipe at all times. Fluid communication between the supply pipe Ii and the spray head 2| is afforded by means of openings 25 in the section lib of the supply pipe, these openings, of course, being located between the two plugs 23 within the limits of reciprocation of the spray head 2|. In order to permit spraying of the extreme right hand end portion of the screen and still to permit the right hand end of the supply a pipe l6 to be spaced somewhat to the left of the closed end Illa of the screen, an auxiliary pipe 25 carrying spray nozzles 21 is connected to the right hand end portion of the spray head 2| to extend beyond the right hand plug 23 of the spray head.

The supporting bracket l carries in the lower opening thereof a supporting tube 28. This tube is preferably made in two sections 28a and 28b and the inner section extends into the screen l0 and carries at its inner end a securing bracket 29 which is attached to the inner end of the supply pipe li as by means of a pin 30. The supporting bracket l5 and tube 28 thus form the sole support for the supply pipe l5 and the spray head 2| and, of course, the bracket I5 is located-at one end of the screen l0 so that while the supply pipe and spray head are very strongly supported, the supporting structure does not interfere with the movement of the screen In and no alterations must be made in the screen to install the present shower.

Carried by the outer end of the tube 28 is a fluid pressure motor 3 l. Th'ls fluid pressure motor includes a piston ila working within a cylinder ill: and the piston is reciprocated in the cylinder preferably by air pressure. Inasmuch as any small compact motor could be substituted for the motor 3| to cause reciprocation of the parts, further description of the motor 3| is thmht unnecessary here. The piston ila is connected to a piston rod 32 which runs through apackingglandiiinthe endof the motor il connected to the tube 2}. The free end of the piston rod 22 is connected by a universal joint 24 to a rod" working within the tube 28 and mounted for reciprocation therein on a ring bearing 28 carried by the tube 28. The section 28b of the tube 28 is provided at its upper partnear its inner end with'a slot 31 of, a length slightly greater than the length of travel of the piston ila and piston rod 32. secured to the inner end of the spray head 2| is an arm it which projects down- .wardly from the spray head through the slot 31 into the tube 28 and is connected to the inner end of the rod ,Ii. With this construction it will be seen thatas the motor il reciprocates the piston rod 22 the rod ii will be similarly reciprocated and this rod being connected to thespray head 2| through the arm ii, the spray head will be reciprocated back and forth on the rigid supply tube l6.

when a shower is in operation water furnished by the pipe I i will run into the supply pipe l6 and thence through the openings 25 into the sleevelike spray head 2| to be ejected from the spray nozzles 22 in fine needle-like sprays which strike the inner surface of the screen Ill. The reciprocation of the spray head 2| will cause the same to move longitudinally of the axis of rotation of the screen Ill and accordingly the spray jets will move transversely of the screen slots llld while the screen is being rotated. These spray jets clue to the reciprocation of the spray head, will strike the slots of the screen at varying angles, and will efllciently remove any clots or other obstructions connection with the usual stationary showers.

It will be seen that a highly eflicient reciprocating shower has been provided to operate for the purposes intended.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts without departure from the scope of the invention which generally stated consists in the matter shown and described and set forth in the appended claim.

What is claimed is:

In a paper making machine, a rotary cylindric'al screen having one closed end and one open end and through which watered pulp passes from the exterior of the screen to the interior thereof,

a fixed water supply .tube extending into said screen from the open end thereof, a tubular apertured spray head mounted for reciprocation within said screen on said water supply tube and having its ends packed relative to said tube, said tube having communication with said spray head between the packed ends thereof, means for reciprocating said spray head, stationary means for supplying water to said tube, and fixed means adjacent the open end of said screen for solely supporting said tube and said means for reciprocating said spray head.

ARTHUR E. BROUGHTON. 

